Ice-making machine.



W. GRAAFF. IGH MAKING MACHINE. APPLIUATIoN FILED 141121226, 1911.

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Patented Nov. 25. 1913- ings 'el Both vesselsfarejevacuated after the absorbing and the'refri'gerating medium WILHELM GRAAFF, or BERLIN, GERMANY.

10E-MAKING MACHINE.

specification crimen. Patent.

Application inea september 2e, 1911. serial No. 651,397.

To all whom 15mm/concern? Be it known th at I, WILHELM GRAAFF', merchant, a subject of the German Emperor, and residing: at 17 Linkstrasse, Berlin, W.

-9, in the Kingdom of Prussia, Germany,

have invented certain new and useful Im-- provements in 'Ice-Making Machines, `of which theA following is a specication.- i

The present invention relates to ice making machines of thetype, in which .the refrigeratingmedium is separa-ted in a` vessel from asolution by means of evaporation, then again condensed in a second vessel, thereupon revaporated under action of a vacuum andfinally again absorbed byjan# absorbent substance'in the first vessel. A machine of this type is described for instance in the U. S. Patent 958,683. In this known machine metal 'plates or disks are arranged in both Vabsorber and refrigera-f tor-,with the^object of promoting the con' duction' of the heat into and from the interior of the machine, of increasing-the absorbiiigand evaporating surfaces and 'of acting as agitatorson the machine being rotated and preventing' the liquid from being carried fromone vvesselinto the other.

It has beenl found in machines constructed with Hat diskscthat too great afquantity of the absorbing medium will remain in the refrigerator, when the llatter is raisedabove the absorber. ficultyA the disks in the machine constructed according tothe present invention are made of a funnel'like shape, which will when' the machine is tilted back so that the refrigerator is above Athe absorber,'insure a good vreturn of the absorbingmedium into" the absorber.y

In the accompanying drawing a-,constructional form of lthe machine ,according to the present invention is shown in diagram and in partsection. YIn this drawing a is` the absorber and b i's'the refrigerator of the machine. Both vessels communicate through the pipe o, which isperforated with holesd and at the same time Y, serves for. allowing` of rotating the machine i'n suitable Vbear- In orderto avoid this' d ifhave been introduced, and the vessels are thereupon" permanently closed and sealedv in a hermetical manner. .Within the two vessels the perforated disks fare arranged;- in contact with the walls of the vessels; these disks'have a funnel or dishlike shape anda tubular socket g on which if necessaryr a bead l1. may be provided, particularly on the disks in the absorber 'Ihese tubular sockets of sleeves g and bead z.

tend to prevent the liquid carried by the disks during the rotation, from dripping ydown on the hollow shaft and thence finding its way intol the refrigerator where its preserice would interfere with the operation of v.the refrigerator. F lThe disks in the refrig- `eratorare turned with their socket (1 toward the entrance opening ofthe tube'c.

Patented Nov. 25, 1913'.

Therefore the absorbing medium will, when it has been conveyed into the refrigerator by lifting the absorber a, fiow back easily .into -theabsorberwhen the refrigerator is lifted,.so that only a small quantity of 'the absorbing medium will remain ini there;

frigerator. In consequenceof their funnellike shape the disks f furthermore offer4 a greater evaporatmg and absorblng vsurface lthan the knownflatdisks and their mixing Veffectlis also'greater than that of the flat disks. I claim- 1. In a ice making machine the combi- .nationI of a vessel serving as distiller and absorber with a vessel Aserving as condenser and refrigerator, a tubei connecting said vessels, passing through the absorber-and having perforations within ,the same and Aserving Aas a revolving`shaft for said vessels, a plurality of conical, perforated disks in the absorber, said disks having atu`bu- 'lar socket.

:sol

` 2. In an ice mak-ing machine the combina tion. of a vessel serving as distiller andl absorber withvv a vessel serving," as condenser `and refrigerator, a tube connecting the two l said1vessels, passing through the absorber and having -perforations within said ab sorber saidV tube servingv as avcommon revolving shaft for said vessels, a pluralityof conical disks withperforations mounted central tubular socket, provided with a bead said absorber.

in the absorber,` said diskseaeh having a sorber all turned with their apces toward at the free end, and'similarly shaped per- WILHELM GRAFF.

forated disks each having a central tubular socket in. the refrigerator, said diskslin the `Witnessesz a absorber al1 turned with their apices toward Louis E: PHILIPS'ON,

A said refrigerator and said disks in the ab- HENRY AHAsrrzR. 

